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Dilution Series

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1. If the original culture contains 5 x 10 ^9 cfu/ml, how many cfu/ml are in each tube? How many colonies are on each plate?

2. If tube C contains 60,000 cfu/ml, how many cfu/ml are in the original culture, how many cfu/ml are in the other tubes, and how many colonies are on each plate?

3. How would you inoculate a plate to obtain a 1:100 dilution?

4. How would you inoculate a plate to obtain a 1:50 dilution?

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https://brainmass.com/biology/human-biology/dilution-series-118472

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1. See attachment. For plates the quantity of cfu or colony forming units is the amount of colonies that will form.

2. If C= 5x10^9 cfu/ml and ...

Solution Summary

Detailed explanation of how a specific dilution series is made and answers to questions pertaining to it.

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